Merge branch '__rultor'

src/main/java/org/eolang/jeo/representation/xmir/XmlClass.java

@@ -53,9 +53,6 @@ public XmlClass(final Node xml) {
     /**
      * Retrieve all constructors from XMIR.
      * @return List of constructors.
-     * @todo #167:60min Add unit tests for 'constructors' method.
-     *  Currently we don't have unit tests for that method. So, it makes sense to add
-     *  them to keep code safe and clear.
      */
     public List<XmlMethod> constructors() {
         return this.objects().filter(

src/test/java/org/eolang/jeo/representation/xmir/XmlClassTest.java

@@ -0,0 +1,79 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016-2023 Objectionary.com
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+package org.eolang.jeo.representation.xmir;
+
+import com.jcabi.xml.XML;
+import com.jcabi.xml.XMLDocument;
+import org.hamcrest.MatcherAssert;
+import org.hamcrest.Matchers;
+import org.junit.jupiter.api.Test;
+
+/**
+ * Test case for {@link XmlClass}.
+ * @since 0.1
+ */
+class XmlClassTest {
+
+    @Test
+    void retrievesConstructor() {
+        final XML doc = new XMLDocument(
+            String.join(
+                "",
+                "<o name='FooClass'>",
+                "<o name='new'>",
+                "</o></o>"
+            )
+        );
+        MatcherAssert.assertThat(
+            String.format(
+                "%s should retrieve exactly one constructor from %n%s%n",
+                XmlClass.class.getSimpleName(),
+                doc
+            ),
+            new XmlClass(doc.node().getFirstChild()).constructors(),
+            Matchers.hasSize(1)
+        );
+    }
+
+    @Test
+    void doesNotRetrieveConstructor() {
+        final XML doc = new XMLDocument(
+            String.join(
+                "",
+                "<o name='BarClass'>",
+                "<o name='bar'>",
+                "</o></o>"
+            )
+        );
+        MatcherAssert.assertThat(
+            String.format(
+                "%s should not retrieve any constructor from %n%s%n",
+                XmlClass.class.getSimpleName(),
+                doc
+            ),
+            new XmlClass(doc.node().getFirstChild()).constructors(),
+            Matchers.empty()
+        );
+    }
+}